Chuck Lever wrote:
> On Oct 9, 2008, at Oct 9, 2008, 11:48 AM, Steve Dickson wrote:
>> Unfortunately, I'm failing miserably on reproducing this... Here is
>> what I've done:
>>
>> Chuck Lever wrote:
>>> Hi Steve-
>>>
>>> As I understand it, the documented bug refers to running nfs-utils 1.1.3
>>> on kernels older than 2.6.22.
>> I created a Fedora 7 KVM guest that runs a 2.6.21 kernel. I installed
>> the nfs-utils-1.1.3 (F-10) package along with supporting packages
>> (libgssglue, librpcsecgss and libnfsidmap). I did both mount commands
>>
>> mount -o sec=none madhat:/home /mnt/home
>> mount -o sec=sys madhat:/home /mnt/home
>>
>> and was able to write to both mount points.
>
> bcwong's patch changes the server side too. Have you tried mounting a
> server running an old version of nfs-utils?
Well it turns out bcwong's patch was rewritten by the following patch:
commit 603017f2c1587d760e2649b889b581ca267ffee7
Author: J. Bruce Fields <[EMAIL PROTECTED]>
Date: Thu Aug 28 11:23:05 2008 -0400
Determine supported pseudoflavors from export
Instead of using a static list of supported flavors, we should be taking
the list from the export.
Signed-off-by: J. Bruce Fields <[EMAIL PROTECTED]>
So this might be the problem... but....
>
>>> To reproduce this you need to force the use of the legacy mount command
>>> that parses mount options in user space and passes a binary data
>>> structure to the kernel via mount(2).
>> If this the case, we need a legacy mount command, then how can it be a
>> bug in nfs-utils-1.1.3?
>
> Easy... the mount.nfs subcommand in nfs-utils-1.1.3 switches to legacy
> mode on old kernels (pre 2.6.23). What I meant by "you need to force
> the use of the legacy mount command" is that you need to force the use
> of the legacy binary mount interface.
I have tried a legacy FC-5 mount binary (util-linux 2.13-pre7) on both a 2.6.21
kernel (FC-7) and a 2.6.25.14 kernel (F-9) mounting a F-10 server running
nfs-utils-1.1.3 with out a problem.
One oddity the mount binary fails when I used the '-o sec=none' flag with:
Warning: Unrecognized security flavor none.
Bad nfs mount parameter: sec
So something else has to be going on here....
steved.
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